REYNALDO G. GARZA, Circuit Judge:

BACKGROUND

REYNALDO G. GARZA, Circuit Judge:

Ysleta Del Sur Pueblo (the "Tribe" or the "Pueblo"), a federally recognized Indian Tribe, filed suit in federal district court, seeking to eject David M. Randy, Robert L. Nichols, Anne S. Wynne, Eddie Sanchez, and Rudy Lugo, present commissioners of the Texas Transportation Commission, and two employees of the Texas Department of Transportation, in their individual capacities ("Appellants"), from a piece of real property (the "Property") which currently serves as a highway maintenance facility in El Paso County, Texas. The tribe also requested that the Appellants remove their equipment and "all hazardous and environmentally damaging material" from the Property. The Pueblo alleges that the Appellants are trespassing in violation of federal law.

The Pueblo is an indigenous Native American Tribe that was originally situated in Isleta [anglicized spelling], New Mexico, where from time to time it received population accretions from the Pueblos of Abu, Quari, and Grand Quivara. In 1680, during the Pueblo Revolt, a portion of the Pueblo migrated south with retreating Spaniards and occupied camps in the present day El Paso vicinity. In 1682, Spanish Governor Otermin attempted to reconquer New Mexico, attacking the Isleta Pueblo, reducing it to his control and relocating it to the El Paso area with the Pueblo members who had fled New Mexico in 1680. In 1682, the Pueblo was situated at its present site in what is now El Paso County, Texas.

In 1751, the Governor of New Mexico granted land, including the Property, to the Pueblo. Neither its legal title nor aboriginal right to the Property was ever terminated by the Kingdom of Spain, the Republic of Mexico, or the Republic of Texas, the successive governments claiming sovereignty over the area including the Property prior to the United States. In 1845, Texas was admitted to the Union, sparking the Mexican-American War, which ending in 1848 with the signing of the Treaty of Guadalupe Hidalgo. Article VIII of the treaty guaranteed the protection of the title held by Mexican citizens to land in the United States, and members of the Tribe were, at the time the treaty was signed, Mexican citizens.

The Pueblo contends that between 1846 and 1850, the federal government acknowledged the Tribe's interest in its lands. Nonetheless, the State of Texas (the "State"), evidently claiming or believing it held title, relinquished the Tribe's land, including the Property, to a municipality. The Property was at some later time conveyed back to the State, and the State is the current title holder of record. The Pueblo argues that the State's action violated the Trade and Intercourse Act, referred to as the Indian Nonintercourse Act (the "NIA"). It claims that because of the violation of the NIA, the State's relinquishment of the Property and all subsequent conveyances are null and void, making Appellants' continued occupation of the Property illegal.

Appellants filed a motion to dismiss under Federal Rule of Civil Procedure 12(b)(6). In the motion, they asserted that the suit is barred by the Eleventh Amendment to the United States Constitution. In an order entered January 26, 1999, the district court denied the motion after concluding that "Congress clearly intended to abrogate the States' Eleventh Amendment immunity when it enacted the Nonintercourse Act and Congress has the power to do so under the Indian Commerce Clause."

ANALYSIS I.

This court has jurisdiction, under the collateral order doctrine, to entertain an appeal of the denial of a Federal Rule of Civil Procedure 12(b)(6) motion to dismiss based upon a claim of Eleventh Amendment sovereign immunity. See Puerto Rico Aqueduct and Sewer Auth. v. Metcalf Eddy, Inc., 506 U.S. 139, 141 (1993). We review "Eleventh Amendment immunity determinations, like other questions of subject matter jurisdiction, de novo as a question of law." United States v. Texas Tech Univ., 171 F.3d 279, 288 (5th Cir. 1999).

II.

We hold that the State of Texas enjoys immunity, under the Eleventh Amendment, from a suit instituted by an Indian Pueblo alleging a cause of action arising under the NIA, 25 U.S.C. § 177. The Eleventh Amendment constitutes an important limitation on federal authority to review allegedly illegal or unconstitutional actions of state governments and their officers. And yet, our federal system requires that we protect state autonomy while promoting state compliance with federal law. Consequently, several methods of circumventing the Eleventh Amendment's prohibition against suing states in federal court have arisen. Under the Eleventh Amendment, a state enjoys immunity from a suit instituted in a federal court by an Indian tribe, unless the state expressly waives its sovereign immunity, its immunity is properly abrogated by Congress, or the suit "falls within the exception . . . recognized for certain suits seeking declaratory and injunctive relief against state officers in their individual capacities." The Eleventh Amendment's applicability to this case turns on whether this is a suit against the State, and if so, whether Congress validly abrogated state sovereign immunity in the NIA or whether the Pueblo may proceed under the doctrine of Ex parte Young. We hold that this is a suit against the State, that Congress did not abrogate state sovereign immunity in the NIA, and that the Pueblo may not proceed under the Ex parte Young doctrine.

III.

First, before we analyze the issue of congressional abrogation of state immunity, we must determine whether the instant suit is one against the State. Often, suits stating a cause of action under a particular statute name both the state and state officials, in their individual capacities. Under those circumstances, a plaintiff mounts an attack against the state by arguing that the statute at issue abrogates sovereign immunity. If the court finds valid abrogation, both prospective and retroactive relief are available against the state. If however, the particular statute has not properly abrogated state sovereign immunity, the plaintiff may nevertheless challenge the action of the state officials under the Ex parte Young doctrine, for prospective relief. See, e.g., Seminole Tribe v. Florida, 517 U.S. 44, 47 (1996) (unsuccessfully arguing both abrogation against the state and the doctrine of Ex parte Young against a state official).

In the instant case, the Pueblo has not expressly named the State of Texas or one of its agencies as a defendant, but rather only certain state officials. In Pennhurst State School Hospital v. Halderman, 465 U.S. 89 (1984), the Supreme Court examined whether a suit against state officials, alleging a violation of state law and seeking prospective relief, could be maintained under the doctrine of Ex parte Young. In deciding that it could not, the Court discussed whether the suit was actually against the State:

There may be a question, however, whether a particular suit in fact is a suit against the State. . . .

When the suit is brought only against state officials, a question arises as to whether that suit is a suit against the State itself. Although prior decisions of this Court have not been entirely consistent on this issue, certain principles are well established. The Eleventh Amendment bars a suit against state officials when the state is the real, substantial party in interest. Thus, [t]he general rule is that relief sought nominally against an officer is in fact against the sovereign if the decree would operate against the latter . . .

The Court has recognized an important exception to this general rule: a suit challenging the constitutionality of a state officials's action is not one against the State. This was the holding of Ex parte Young. . . .

Id. at 101-102 (footnote, citations, and internal quotation marks omitted and emphasis added). The Court explained in a footnote: "The general rule is that a suit is against the sovereign if the judgment sought would expend itself on the public treasury or domain, or interfere with the public administration, or if the effect of the judgment would be to restrain the Government from acting, or to compel it to act." Id. at 101 n. 11.

For purposes of addressing congressional abrogation of immunity, we recognize that the State is the true party of interest in this case, although it has not been expressly named as a defendant. The State is the real party of interest because the State holds record title to the Property, utilizes the Property as a maintenance facility, and the Pueblo is attempting to persuade us to declare that title null and void. For purposes of deciding whether the Ex parte Young doctrine is applicable in the instant case, we acknowledge that the state officials are named in their individual capacities. See, e.g., Fitzpatrick v. Bitzer, 427 U.S. 445 (1976) (letting stand a lower court decision granting prospective relief and addressing abrogation for purposes of retrospective relief in a case naming only state officials as defendants). As the Court stated in Idaho v. Coeur d'Alene, 521 U.S. 261, 270 (1997), "The real interests served by the Eleventh Amendment are not to be sacrificed to elementary mechanics of captions and pleadings."

IV.

Having determined that this is a suit against the State, we now address the question of whether Congress validly abrogated state sovereign immunity in the NIA. We hold that Congress has not. To validly abrogate state sovereign immunity, Congress must "`unequivocally express . . . its intent to abrogate the immunity,' . . . and second, . . . [it must act] `pursuant to a valid exercise of power.'" Florida Prepaid Postsecondary Ed. Expense Bd. v. College Sav. Bank, 119 S.Ct. 2199, 2205 (quoting Seminole Tribe, 517 U.S. at 55, 116 S.Ct. 1114).

Appellants argue that, under Seminole Tribe, Congress' intent to abrogate state sovereign immunity must be unmistakably clear in the statute. The NIA, they argue is silent as to abrogation. The Pueblo relies primarily on County of Oneida v. Oneida Indian Nation, 470 U.S. 226 (1984) (" Oneida II"), in arguing that the NIA provides a clear statement of Congress' intent to abrogate state sovereign immunity. First, the Pueblo asserts that federal law applies to transactions in Indian land. The NIA, it argues, invalidates unauthorized transactions and imposes sanctions on violators. The NIA, it maintains, was intended to apply to both individuals and the states, and Congress' original intent in passing the NIA was to provide a federal forum for the adjudication of Indian concerns. The Pueblo concludes, therefore, that the NIA contemplates state liability in federal courts and is a clear statement of Congress' intent to abrogate states' sovereign immunity.

Appellants respond that the Tribe's reliance on Oneida II is misplaced. Oneida II, they argue, dealt with whether the NIA provides tribes a private cause of action, not with whether the statute waives sovereign immunity. The State of New York, they point out, was not even a party to the suit.

Contrary to the Tribe's assertion, Oneida II does not imply a private cause of action for Indians under the NIA. Indeed, the Supreme Court specifically declined to reach that issue. The text of the statute does appear, however, to apply to the states in its invalidation of any unauthorized transaction. Even assuming an implied private cause of action, however, the Tribe makes a fatal logical leap by concluding that a congressional intent to abrogate state sovereign immunity flows from the fact that an implied private cause of action exists under a statute applicable to states and private individuals. The leap is especially large considering the historical relationship between the United States and the Indians. The statute could easily be determined to provide tribes an implied private cause of action against any party other than a state while reserving for the United States a cause of action as fiduciary against any party, including a state. Seminole Tribe provides that:

Congress' intent to abrogate the States' immunity from suit must be obvious from a clear legislative statement . . . [A] general authorization for suit in federal court is not the kind of unequivocal statutory language sufficient to abrogate the Eleventh Amendment . . . Congress may abrogate the States' constitutionally secured immunity from suit in federal court only by making its intention unmistakably clear in the language of the statute.

517 U.S. at 55-56 (internal citations and quotation marks omitted). The statute, on its face, does not provide an unmistakably clear intent to abrogate state sovereign immunity. Nor does the Tribe point to any statement by Congress in the 200 years since the NIA's initial passage indicating an intent to abrogate state sovereign immunity. Congress certainly could have amended the statute following the passage of the Eleventh Amendment to include a clear statement of abrogation if it had so desired, but it never did.

V.

In Seminole Tribe, the Supreme Court overruled its holding in Pennsylvania v. Union Gas Co., 491 U.S. 1 (1989), that Congress can rely on its Commerce Clause power to abrogate state sovereign immunity. In doing so, the Court stated, "The Eleventh Amendment restricts the judicial power under Article III, and Article I cannot be used to circumvent the constitutional limitations placed upon federal jurisdiction." Seminole Tribe, 517 U.S. at 72-73. Any argument that this statement was dicta and that the holding applied only to the Commerce Clause power was put to rest in Florida Prepaid. There, the Supreme Court stated, " Seminole Tribe makes clear that Congress may not abrogate state sovereign immunity pursuant to its Article I powers. . . ." Florida Prepaid, 119 S.Ct. at 2205. The Tribe's argument, therefore, that abrogation is justified by Congress' War Powers is misplaced.

Equally misplaced is the Tribe's reliance on Congress' power in Section 5 of the 14th Amendment. The NIA was originally passed in 1790; the second NIA was passed in 1793, and the language of that act was carried forward in several future acts concluding with an act in 1834. See Oneida I, 414 U.S. at 668 n. 4. The Eleventh Amendment was ratified in 1798. In any event, the alleged violation was a violation of the 1834 NIA. The Fourteenth Amendment was not ratified until 1868.

It is nonsensical to rely on the Fourteenth Amendment to justify abrogation under a statute passed before its ratification. The Pueblo cites no authority for the proposition that Congress, in passing the NIA, could abrogate state sovereign immunity under a power not yet granted to it.

VI.

The district court did not address whether this suit may proceed under the Ex parte Young doctrine. However, as we now find that the district court erred with respect to abrogation, it becomes necessary to decide if the Pueblo may proceed with its suit against the state officials under Ex parte Young. Generally speaking, the Eleventh Amendment allows suits against state officers, however, whether a state officer may be sued depends, largely, on the claim presented and the nature of the relief sought.

Appellants argue that this is an action to quiet title, citing Idaho v. Coeur d'Alene, 521 U.S. 261 (1997), for the proposition that quiet title actions against states cannot be adjudicated in federal courts. In Coeur d'Alene, a tribe sought to quiet title to the submerged land and beds of Lake Coeur d'Alene and various surrounding waterways. See id. at 254. A plurality of the Court held that the Ex parte Young doctrine was inapplicable to the case. Id. The Tribe asserts that the State's title is null and void and that it has superior title, seeking to eject the state officials from the property.

Moreover, Appellants argue, the Tribe's assertion that the relief it seeks is merely prospective has been rejected in John G. And Marie Stella Kenedy Memorial Foundation v. Mauro, 21 F.3d 667 (5th Cir. 1994). In that case, the Foundation asserted ownership over certain land in the possession of the state of Texas. Appellants cite this case for the proposition that an action to put a plaintiff in possession of real property held by the state is a quiet title action forbidden by the Eleventh Amendment, and that ordering the state to relinquish property was the equivalent of recovering damages against the state. This court held that the plaintiff's complaint was an action to quiet title, stating that a federal court "does not have the power to adjudicate the State's interest in property without the State's consent." Id.

Appellants distinguish the instant case from Florida Dep't of State v. Treasure Salvors, 458 U.S. 670 (1982). There, the Supreme Court held that the state had no colorable claim to title in the disputed personal property. Here, Appellants urge, as was the case in Mauro, the State has a colorable claim to title.

The Pueblo relies on Coeur d'Alene, arguing that in that case the Supreme Court reaffirmed the doctrine of Ex parte Young. The Tribe maintains that the Supreme Court declined to apply the Ex parte Young doctrine in Coeur d'Alene because of the particular relief sought — a quiet title action seeking to divest the state of any regulatory power over the disputed property — and the type of real property at issue, submerged lands. According to the Pueblo, Justice O'Connor's concurrence makes clear that in cases involving ordinary land, a distinction can be made between possession and title. Here, as in United States v. Lee, 106 U.S. 196 (1882), and Tindal v. Wesley, 167 U.S. 204 (1897), the Tribe argues, regular land is involved, and a distinction can be made between possession and title. That is, according to the Tribe, Coeur d'Alene vitiates Mauro.

Appellants respond that Texas has special interests equal to those of Idaho in Coeur d'Alene. The land at issue here is located in a highly developed area, used for highway construction, maintenance and operation, and has many improvement that help facilitate the purposes which it serves. According to the Appellants, the State will be unable to properly carry out its sovereign responsibilities with regards to state roadways if it loses possession of the property. Appellants note that this case should not be viewed any differently than a case where plaintiffs seek to take possession of land upon which a state highway has been constructed.

In Coeur d'Alene, Justice O'Connor's concurrence sets forth the controlling test with regard to Ex parte Young as whether "a plaintiff alleges an ongoing violation of federal law, and [whether] the relief sought is prospective rather than retrospective." Id. at 294. Justice O'Connor observed, however, two important distinctions between this case and a normal Ex parte Young action: this was an action to quiet title, and the tribe sought to divest the state of all regulatory power.

Justice O'Connor distinguished United States v. Lee and Tindal v. Wesley on the grounds that, in those cases, possession could be distinguished from title. "A court could find that the officials had no right to remain in possession, thus conveying all the incidents of ownership to the plaintiff, without formally divesting the state of its title." Id. at 290. Justice O'Connor argued that in the case before the Court, the state would lose all regulatory power over the property.

There are two main problems with the Tribe's arguments. First, the Tribe has not sufficiently distinguished its own case from a quiet title action, and second, Coeur d'Alene did not vitiate Mauro. The Tribe asserts in its First Amended Complaint that "The Pueblo retains legal title to all lands described in the Relinquishment Acts, as well as the right to possess those lands over which it exercised aboriginal possession on December 29, 1845." By seeking to eject Appellants, the Tribe is asking this court to determine that the State has no title to the Property because title rests in the Pueblo. Additionally, the Tribes's argument that the State will retain sufficient regulatory control over the Property rings hollow. A judgment for the Tribe will significantly alter the State's regulatory control over the Property because the Property will be considered part of an Indian reservation under federal control. Moreover, the State here, unlike Florida in Treasure Salvors, has a colorable claim to title: the Tribe was not federally recognized until the 1900's, so there is a question whether it would have even retained legal title to land held by it when Texas became a state.

Justice O'Connor's concurring opinion in Coeur d'Alene deals specifically with submerged lands and avoids the topic of other pieces of real property. Also, there is no rationale for denial of Ex parte Young treatment in that case that represents the views of a majority of the Court. The Tribe therefore incorrectly relies on a statement in Justice O'Connor's concurrence to declare Mauro, a case involving real property in another context, vitiated. Justice O'Connor set other contexts aside when she stated, "Whatever distinction can be drawn between possession and ownership of real property in other contexts,. . . ." Coeur d'Alene, 521 U.S. at 291. Mauro controls and the Tribe's attempt to fit this case within the doctrine of Ex parte Young must fail.

CONCLUSION

We hold that the State of Texas enjoys immunity, under the Eleventh Amendment, from a suit instituted by an Indian pueblo alleging a cause of action arising under the NIA. Accordingly, we find that the district court erred in denying the Appellants' Rule 12(b)(6) motion to dismiss, and we therefore REVERSE and RENDER, dismissing this case on the grounds of state sovereign immunity.